Well, they can start by reaching out to their local school. Seeing if there is anything they can do for the community. Don't be afraid to ask what you can do to make this world a better place!
A topic is what the paper is about, a theme is sort of how a story is set. For example, maybe my topic is danger, so I use that through the theme of snow
True, use a colon rather than a comma to follow a salutation in a business letter.
Dear Ma. Johnson:
Dear Dave,
Everything you need to know about the tone of Mary Wollstonecraft's A Vindication of the Rights of Woman, ... Take a story's temperature by studying its tone.